Saving Water in. Multifamily Buildings

Transcription

1 Saving Water in Multifamily Buildings

2 What is WaterSese? Actions that can be taken to reduce water use -- at home, outdoors and at work Practices Fixtures and technologies save water Products People Partners reach users to change behavior

3 WaterSense Labeled Products Flushing Urinals Spray Sprinkler Bodies Lavatory Faucets Tank & Flushometer Valve Toilets Irrigation Controllers Showerheads PreRinse Spray Valves More than 20,000 Labeled Product Models

4 What Are Water Rates Going Up? From 1900 To 2016

5 How Are You Being Charged for Water?

6 Be Careful It Could Change Water Rate Structure Over Time Use More Pay More 100% 90% 80% 70% 60% Flat 50% 40% 30% 20% Use More Pay Less 10% 0% Decreasing block 2006 Uniform Increasing block

7 Management Tool Assess whole building energy, water, and waste consumption Track changes in performance over time Create custom reports Share/report data with others Apply for ENERGY STAR certification (based on energy performance only)

8 Who Uses Portfolio Manger? Current Portfolio Manager users include: 500,000+ properties benchmarking energy use 110,000+ properties benchmark water use 200,000+ properties benchmark energy/water using web services 31,000+ ENERGY STAR certified properties 40% of U.S. commercial buildings space Leveraged by municipal/state benchmarking requirements

9 Why Multifamily? Comparatively intense users of water Portfolio Manager trends indicate that multifamily housing is among the most intense users of waters of all sectors (behind only food service, hotels, senior care facilities, and hospitals) Presence in the national building stock More 33.1 million residences in the U.S. are located in multifamily buildings, roughly 25% of all housing the country Distributed throughout the country Availability of data Fannie Mae Multifamily Energy and Water Market Research Survey Willingness of partners to participate Industry and utility partners have shown a tremendous amount of interest

10 It s a Highly Variable Building Type

11 EPA s Score for Multifamily Buildings Available for existing multifamily buildings with 20 or more units Approach consistent with the ENERGY STAR Score Statistical evaluation of measured whole building resource (water) use Normalize for weather and operation Provide a meaningful peer comparison Drive reductions in resource (water) use What s similar to ENERGY STAR score approach?

12 Saving Water in Restaurants Inputs Adjusted Appropriately for Water Include all water use (indoor and outdoor) Focus on water intensity: Total water use divided by building square foot Assess normalization factors in the context of water Operation is assessed with an understanding of water use Climate terms capture outdoor water needs Irrigated Area is an important factor (capped at a 1:1 ratio with floor area) No EPA certification based on the Water Score What s different from ENERGY STAR score approach?

13 How the score works Example 1 Variables Multifamily A Multifamily B 150, ,000 Number of Units Number of Bedrooms Irrigated Area Wet & Cool Wet & Cool Expected WUI (gal/ft2) Actual WUI (gal/ft2) EPA Water Score Size Climate

14 How the score works Example 1 Variables What is the Same? Size Climate Irrigated area Water Use Multifamily A Multifamily B 150, ,000 Number of Units Number of Bedrooms Irrigated Area Wet & Cool Wet & Cool Expected WUI (gal/ft2) Actual WUI (gal/ft2) EPA Water Score Gal/unit 38k 42k Size Climate What is Different? Number of Units Number of Bedrooms Score Why? Multifamily A is expected to use more water due to Higher unit density More bedrooms per unit

15 How the score works Example 2 Variables Multifamily A Multifamily B 150, ,000 Number of Units Number of Bedrooms , Dry & Hot Wet & Cool Expected WUI (gal/ft2) Actual WUI (gal/ft2) EPA Water Score Size Irrigated Area Climate

16 How the score works Example 2 Variables What is the Same? Size Number of Units Number of Bedrooms Water Use Multifamily A Multifamily B 150, ,000 Number of Units Number of Bedrooms , Dry & Hot Wet & Cool Expected WUI (gal/ft2) Actual WUI (gal/ft2) EPA Water Score Gal/unit 38k 38k Size Irrigated Area Climate What is Different? Climate Irrigated Area Score Why? Multifamily A is expected to use more water due to Climate Irrigated Area

17 Multifamily Guides Water efficiency management guides focused on multifamily buildings cover: Bathrooms Residential kitchens and laundries Outdoor Water Use Mechanical systems Multifamily Water Assessment Tool (coming soon)

18 Questions? Contact Jonah Schein WaterSense Helpline Phone: (866) WTR-SENS ( )